#### **Step 1: Prepare the Onion Rings**
Peel the onions and slice them into **¼-inch rings**. Separate the rings and pat dry with a paper towel.
#### **Step 2: Make the Batter**
In a large bowl, whisk together **flour, cornstarch, baking powder, garlic powder, paprika, salt, and black pepper**. Slowly whisk in the **club soda (or buttermilk)** until smooth.
#### **Step 3: Coat the Onion Rings**
Dip each onion ring into the batter, letting the excess drip off. For extra crispiness, dredge in **breadcrumbs or panko** before frying.
#### **Step 4: Fry Until Golden**
Heat **oil to 350°F (175°C)** in a deep fryer or large pot. Fry the onion rings in batches for **2-3 minutes**, until **golden brown and crispy**. Drain on paper towels.
#### **Step 5: Serve & Enjoy**
Season with extra salt if needed and serve hot with your favorite dipping sauce.